Ethyl 3-methoxy-2-nitro-6-(trifluoromethoxy)pyridine-4-acetate
2-(Chloromethyl)-5-methoxy-3-nitro-6-(trifluoromethoxy)pyridine
Ethyl 3-methoxy-2-nitro-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-methoxy-6-nitro-5-(trifluoromethoxy)pyridine-3-acetate